Trim/tilt pump leak 1986 Evinrude

[thebulldog]

Ahoy Mates, I have a 1986 Evinrude 90 hp outboard that leaks/blows oil out of the manual control valve.
I have tried screwing the screw out of the pump/motor and it wont come out, i am guessing that theres an O-Ring in there somewhere that should prevent the oil from leaking/blowing out under pressure when the pump is activated ? ?

So I am bit confused, by looking at the photos I can see two very small ears (not that visible in photos) under the screw,
so can the c clip be removed without removing the entire assembly ? would i only be able to get at removal of the c clip
by removing the entire assembly ? if the c clip can be removed without entire disassembly a speciality tool would be required as i have tried with standard c-clip pliers that have an assortment of angled and sized points, but the cavity is deep, would the tool be a Evinrude special ?

Many Thanks, and Needless to say, the next round is on me, Tx Bulldog

 

[Joe Reeves]

Re: Trim/tilt pump leak 1986 Evinrude

Look closely.... there is a snap ring there which is designed to prevent the manual release valve from falling out when you're in 40 feet of water.

It is leaking because someone has backed that valve out more than two turns and backed the valves sealing O Ring into that snap ring, effectively cutting the O ring.

Now, using a scribe, whatever you need to use, get the remainder of that snap ring out of there... then you can remove the manual release valve and install a new O Ring on it.

In the fufture, backc the release valve out ONLY two (2) turns.